8218 Miyota Automatic Watch Movement is a gents Mechanical Automatic movement is an 11 1/2 ligne movement, 26.00 mm in diameter with a thickness of 5.67 mm. 21 jewel, 21,600 beat, 3 hand movement (hour / minute / second), with date window at the 3 o'clock position, and a small seconds indicator at 4:30. Hand dimensions are 150/100/17 (h/m/s). For stem use part number 065-212.